RPZ Valves

RPZ Valve Installation & Commissioning

An RPZ (Reduced Pressure Zone) valve is designed for use in commercial and industria applications to avoid back syphonage and pollution of the potable water distribution system. Foztek specialise in the installation and testing of RPZ valves.

To meet water regulations, RPZ valves are subject to an annual test by the local water authority which can only be carried out by an accredited tester. As a WRAS approved RPZ tester, Foztek plan and carry out all your RPZ testing, and also liaise with your local water authority on your behalf. Our service of supply, testing and installing RPZ valves covers the whole of the UK.

Please contact us for more information on how we can reduce your annual RPZ testing costs.

Who needs an RPZ Valve?


Fire sprinkler systems using anti-freeze solutions

Commercial central heating systems with design heat output >45 kW

Food Processing

Bottle washing apparatus


Food preparation


Bottle washing apparatus

Commercial dishwashing machines

Potato peeling machines (pre-washed produce)

Refrigerating equipment

Industrial and commercial installations

Brewery and distillation plant

Car washing and degreasing plants

Commercial clothes washing machines

Dyeing equipment

Pressurised fire fighting systems

Printing and photographic equipment

Water treatment plant using other than salt

Leisure and hotel facilities

Swimming pool top-up supplies

Backflow, causing cross-contamination between potable and non-potable water supplies, can constitute a serious public health hazard. RPZ valves will provide protection against this hazard.